[POWERPC] 83xx: Remove obsolete setting of ROOT_DEV.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/83xx/mpc832x_mds.c

@@ -118,17 +118,6 @@ static void __init mpc832x_sys_setup_arch(void)
 	}
 
 #endif				/* CONFIG_QUICC_ENGINE */
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	if (initrd_start)
-		ROOT_DEV = Root_RAM0;
-	else
-#endif
-#ifdef  CONFIG_ROOT_NFS
-		ROOT_DEV = Root_NFS;
-#else
-		ROOT_DEV = Root_HDA1;
-#endif
 }
 
 static int __init mpc832x_declare_of_platform_devices(void)

arch/powerpc/platforms/83xx/mpc834x_itx.c

@@ -71,12 +71,6 @@ static void __init mpc834x_itx_setup_arch(void)
 
 	ppc_md.pci_exclude_device = mpc83xx_exclude_device;
 #endif
-
-#ifdef  CONFIG_ROOT_NFS
-	ROOT_DEV = Root_NFS;
-#else
-	ROOT_DEV = Root_HDA1;
-#endif
 }
 
 static void __init mpc834x_itx_init_IRQ(void)

arch/powerpc/platforms/83xx/mpc834x_mds.c

@@ -144,12 +144,6 @@ static void __init mpc834x_mds_setup_arch(void)
 #endif
 
 	mpc834x_usb_cfg();
-
-#ifdef  CONFIG_ROOT_NFS
-	ROOT_DEV = Root_NFS;
-#else
-	ROOT_DEV = Root_HDA1;
-#endif
 }
 
 static void __init mpc834x_mds_init_IRQ(void)

arch/powerpc/platforms/83xx/mpc8360e_pb.c

@@ -128,17 +128,6 @@ static void __init mpc8360_sys_setup_arch(void)
 	}
 
 #endif				/* CONFIG_QUICC_ENGINE */
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	if (initrd_start)
-		ROOT_DEV = Root_RAM0;
-	else
-#endif
-#ifdef  CONFIG_ROOT_NFS
-		ROOT_DEV = Root_NFS;
-#else
-		ROOT_DEV = Root_HDA1;
-#endif
 }
 
 static int __init mpc8360_declare_of_platform_devices(void)